An Evaluation of Impeller Blade Torque During an Impeller–Diffuser Interaction

[+] Author and Article Information
Kevin A. Kaupert

Ebara Cryodynamics International, 350 Salomon Circle, Sparks, NV 89434

J. Fluids Eng 126(6), 960-965 (Mar 11, 2005) (6 pages) doi:10.1115/1.1839929 History: Received May 27, 2003; Revised July 09, 2004; Online March 11, 2005
Copyright © 2004 by ASME
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Control volume and control surfaces in the impeller
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The expression for the axial moment (torque) in terms of blade contributions and fluid contributions
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Geometry of the tested impeller and combined diffuser–return vane. Shroud removed for viewing.
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Solid model view of the 10 stage pump hydraulics that were used to obtain measurments
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Circumferential averaged total pressure coefficient
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Tangential velocity for 10 time steps at the bep flow along a traversal of control volume outlet surface S2
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Comparison of the measured and computed single stage characteristics in LNG
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Comparison of moment contribution terms at bep over 1/5 rotation
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Comparison of moment contribution terms at 120% bep over 1/5 rotation
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Comparison of moment contribution terms at 65% bep over 1/5 rotation



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